Is Mardu Monument legal in Standard, Modern, and Commander?

Mardu Monument is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Mardu Monument?

Mardu Monument is an Artifact. Its oracle text reads: "When this artifact enters, search your library for a basic Mountain, Plains, or Swamp card, reveal it, put it into your hand, then shuffle. {2}{R}{W}{B}, {T}, Sacrifice this artifact: Create three 1/1 red Warrior creature tokens. They gain menace and haste until end of turn. Activate only as a sorcery. (A creature with menace can't be blocked except by two or more creatures.)"

Mardu Monument

Artifact

When this artifact enters, search your library for a basic Mountain, Plains, or Swamp card, reveal it, put it into your hand, then shuffle.

, , Sacrifice this artifact: Create three 1/1 red Warrior creature tokens. They gain menace and haste until end of turn. Activate only as a sorcery. (A creature with menace can't be blocked except by two or more creatures.)